Bradford-White Corp MI30T*F service manual Defender

Page 29

TheBradfordWhite

DEFENDER

Safety System®

SERVICE PROCEDURE RG-VI

Gas Control

Testing, Disassembly & Replacement (Honeywell)

GAS CONTROL REPLACEMENT

Step 8. Install new Gas Control into water heater (contintued).

b)Reattach main burner feedline, pilot tube, piezo igniter wire, inner door wire (red) and thermopile wire (white) to Gas Control. Attach inner door wire (red) to the positive (+) terminal and the thermopile wire

(white) to the negative (-) terminal.

Positive (+) Terminal

(red wire)Negative (-) Terminal (white wire)

c)Gather piezo igniter wire, thermopile wire (white), inner door wire (red), and pilot tube and secure along side of feedline using new wire tie provided.

d)Reconnect gas supply piping to inlet of Gas Control.CAUTIONUse back up wrench on wrench boss

Step 9. Reinstallation of inner door assembly.

of Gas Control, never use back up

wrench on body of Gas Control.

 

 

a) Prior to reinstallation of inner door, fully inspect inner door gasket for the following:

> Tears

> Gasket Adhesion to inner door

 

> Missing Material

> Other imperfections that will inhibit proper seal

> Cracks

> Material left on combustion chamber

> Dirt or debris

 

 

If the gasket is not effected by any of the above, gasket replacement will not be required. If replacement is required, replace using new gasket kit following the instructions provided with kit.

b)Clean any gasket residue or other debris from combustion chamber surface before installing the inner door/gasket assembly.

c)Position thermopile wire, pilot tube and Piezo wire against left side inner door flange gasket. DO NOT ROUTE THROUGH RADIUSED CHANNEL WITH FEEDLINE. Be sure that thermopile and pilot tube are not in position to interfere with outer jacket burner access door when reinstalled.

WARNING

A seal breach may result in a fire or explosion causing property damage, personal injury or death.

Position thermopile, pilot

tube and Piezo wire.

29

29

Image 29
Contents Service Manual Bradford White Introduction White Rodgers/Robertshaw Gas Valve Troubleshooting Chart Honeywell Gas Control Troubleshooting Chart Honeywell Gas Control Troubleshooting Chart Defender Installation of Inner Door With Gasket Combustion chamber Closed Circuit Thermocouple Testing Robertshaw Control Closed Circuit Thermocouple Testing White Rodgers ControlThermocouple Replacement White Rodgers/Robertshaw Gas Valve Open Circuit Thermopile Testing Honeywell Gas Control PILOT/ELECTRODE Assembly Inspection Cleaning and Replacement Defender Piezo IGNITER, Electrode Testing and ReplacementLine Pressure Gas Valve Testing and Replacement White Rodgers/RobertshawMagnet Assembly Testing Robertshaw Control Thermocouple TestingMagnet Assembly Testing White Rodgers Control Combination THERMOSTAT/GAS Valve Replacement ECO Energy Cut Off TestingWrench Boss Position thermocouple, pilot tube and Piezo wire Honeywell Gas Control Testing, Disassembly, and Replacement Thermopile Testing Defender Temperature Sensor TestingSensor Resistance at Various Temperatures Determine Water Temperature Inside TankGAS Control DISASSEMBLY/REASSEMBLY Temperature sensor Wire routing clip Disconnect Use caution not to bend or damage valve body pins Pull in this direction Temperature sensor Insertion stick GAS Control Replacement Defender Combustion chamber Cast Iron Burner Adjustment Main Burner Inspection, Adjustment Cleaning and ReplacementPosition thermocouple/thermopile Pilot tube and Piezo wire Burner Cleaning Resettable Thermal Switch Continuity Testing Over Tighten Screws Resettable Thermal Switch ReplacementFeedline Nut ScreenLok Flame Arrestor CleaningDIP Tube Inspection and Replacement Anode Inspection and Replacement Generic Parts List Parts@bradfordwhite.com Techserv@bradfordwhite.com